1 files changed, 41 insertions, 0 deletions
diff --git a/models/db/convert.go b/models/db/convert.go
new file mode 100644
index 0000000000..bf9a74a9a4
--- /dev/null
+++ b/models/db/convert.go
@@ -0,0 +1,41 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package db
+
+import (
+	"fmt"
+
+	"code.gitea.io/gitea/modules/setting"
+
+	"xorm.io/xorm/schemas"
+)
+
+// ConvertUtf8ToUtf8mb4 converts database and tables from utf8 to utf8mb4 if it's mysql and set ROW_FORMAT=dynamic
+func ConvertUtf8ToUtf8mb4() error {
+	if x.Dialect().URI().DBType != schemas.MYSQL {
+		return nil
+	}
+
+	_, err := x.Exec(fmt.Sprintf("ALTER DATABASE `%s` CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci", setting.Database.Name))
+	if err != nil {
+		return err
+	}
+
+	tables, err := x.DBMetas()
+	if err != nil {
+		return err
+	}
+	for _, table := range tables {
+		if _, err := x.Exec(fmt.Sprintf("ALTER TABLE `%s` ROW_FORMAT=dynamic;", table.Name)); err != nil {
+			return err
+		}
+
+		if _, err := x.Exec(fmt.Sprintf("ALTER TABLE `%s` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;", table.Name)); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}